Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
tetragonalrareSilicates
Carletonite
KNa₄Ca₄Si₈O₁₈(CO₃)₄(OH,F)·H₂O
This image displays a cluster of bright blue, blocky Carletonite crystals, exhibiting a vitreous luster, embedded within a matrix.
Carletonite Physical Properties
Mohs Hardness
4Crystal System
tetragonalLuster
vitreousStreak Color
whiteCleavage
perfect on {001}Fracture
conchoidalSpecific Gravity
2.45Colors
blue, light blue, white, colorlessTransparency
transparentType Locality
Poudrette quarry, Mont Saint-Hilaire, Quebec, CanadaMineral Group
SilicatesUses
collectorAssociated Minerals
serandite, analcime, natrolite, aegirine, microcline, albite, calcite, fluoriteRarity
rareGeological Context
Carletonite is a rare mineral typically found in nepheline syenite pegmatites and associated metasomatized xenoliths, forming in highly alkaline, silica-undersaturated igneous environments.
